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The diameter of a sphere is 14 inches. What is the surface area of the sphere? Express the answer in terms of Piin.Squared. Recall the formula S A = 4 pi r squared. 28 56 112 196

Respuesta :

since the diameter is 14, then its radius is half that or 7.

[tex]\textit{surface area of a sphere}\\\\ SA=4\pi r^2 ~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=7 \end{cases}\implies SA=4\pi (7)^2\implies SA=196\pi[/tex]

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